This
site
offers
the
online
version
of
a
book
published
by
the
United
States
Geological
Survey
(USGS).
It
is
intended
to
provide
a
brief
introduction
to
the
concept
of
plate
tectonics,
highlighting
some
of
the
people
and
discoveries
that
advanced
the
development
of
the
theory.
It
is
the
companion
volume
to
the
map,
'This
Dynamic
Planet',
which
shows
the
locations
of
major
volcanic
belts,
fault
systems,
...
Full description.

This
portal
provides
access
to
maps,
data,
and
other
information
on
the
distribution
and
frequency
of
natural
hazards
in
the
United
States.
The
material
is
arranged
into
seven
categories:
earthquakes,
floods,
hurricanes,
landslides,
tsunamis,
volcanoes,
and
wildfires.
There
are
also
links
to
disaster
emergency
and
relief
organizations
and
to
real-time
resources
such
as
RSS
feeds,
advisories,
and
the
...
Full description.

Grade level:
Middle (6-8), High (9-12), College (13-14), College (15-16), Graduate / Professional, General public

This portal provides access to a variety of govermental, charitable, and private websites with information on earthquake preparedness. Information is available for citizens, responders, planners, and engineers. There are also links to a variety of publications on how to prepare for an earthquake, and to government and non-government first response organizations.
Full description.

This
portal
provides
access
to
information
on
the
threats
and
impacts
of
wildfires
in
the
United
States.
There
is
a
link
to
a
fact
sheet
that
describes
the
impacts
of
wildfires
and
the
United
States
Geological
Survey's
(USGS)
science
priorities
in
researching
them,
and
a
link
to
a
map
that
shows
locations
of
wildfires
larger
than
250
acres
occurring
from
1980
to
2003.
There
are
also
links
to
news
...
Full description.

Grade level:
Middle (6-8), High (9-12), College (13-14), General public

This
article
provides
an
overview
of
the
sedimentary
processes
that
occurred
in
the
aftermath
of
the
May
18,
1980
eruption
of
Mount
St.
Helens.
Topics
include
the
vast
quantity
of
easily
erodable
volcanic
deposits,
high
sedimentation
rates
downstream
from
the
volcano,
changes
in
drainage
patterns
caused
by
the
debris
avalanche
that
triggered
the
eruption,
and
some
efforts
to
control
the
downstream
...
Full description.

This fact sheet provides an overview of basic scientific facts about landslides. Topics include the different types of landslides, ways that they might be triggered, and how to lessen the effects of landslides on people and structures. A set of links to additional information and some suggested publications are provided. A downloadable, printable version is also available.
Full description.

Grade level:
Middle (6-8), High (9-12), College (13-14), General public

This fact sheet provides an overview of the hazards presented by landslides and debris flows, particluarly in wet weather conditions in landslide-prone areas. Topics include a discussion of the characteristics of debris flows, and suggestions for residents who live in steep, hilly terrain which is subject to periodic heavy rains.
Full description.

Grade level:
Middle (6-8), High (9-12), College (13-14), General public

This
portal
provides
access
to
educational
materials
produced
by
the
Cascades
Volcano
Observatory.
The
items
include
news
and
current
events,
information
on
current
activity
of
the
Cascades
volcanoes,
and
emergency
information
in
the
event
of
an
eruption.
There
are
also
frequently-asked-questions
features,
a
glossary,
and
links
to
reading
materials
such
as
fact
sheets
and
reports
of
the
United
States
...
Full description.

Grade level:
Intermediate (3-5), Middle (6-8), High (9-12), College (13-14), General public

This
report
provides
an
overview
of
the
changes
that
occurred
in
lakes
in
the
region
around
Mount
St.
Helens
following
the
eruption
of
May
18,
1980.
Topics
include
water
chemistry,
sediment
supply,
and
biology.
Other
factors
which
are
discussed
include
the
proximity
of
lakes
to
the
volcano,
and
whether
they
were
situated
in
the
blast
zone
or
simply
received
ashfall
from
the
eruption.
Links
to
related
...
Full description.

Grade level:
High (9-12), College (13-14), College (15-16), Graduate / Professional

This
report
summarizes
the
Volcano
Hazards
Program
of
the
United
States
Geological
Survey
(USGS).
Topics
include
its
goals
and
activities,
some
key
accomplishments,
and
a
plan
for
future
operations.
There
are
also
discussions
of
active
and
potentially
active
volcanoes
in
the
U.S.,
the
role
of
the
USGS
volcano
observatories,
prediction
of
eruptions,
and
potential
danger
to
aircraft
from
volcanic
plumes.
...
Full description.

Grade level:
High (9-12), College (13-14), College (15-16), Graduate / Professional